The Three Powers

The three powers consist of the tradional Shichibukai and the Marines, but with a replacement of the Yonkou in the Zenkai, researchers of devil fruits.

Shichibukai
Seven new Shichibukai had replaced the previous Shichibukai. It is unknown where the previous Shichibukai are, or even if they are alive.

The members are as follows:

Ryumen - A Physcotic Individual with an unknown power. Has a history with Talon.

Mai Hiori - Not much is known except she carries a unique sword.

Reaper - A complete skeleton, which is determined to be a devil fruit. Also a member of the Ten Kings, and otherwise bitter enemy to fellow King, Gouki Riosho.

Toshiro Fudo - A man who cusses in every sentence. Literally. With the powers of the light light fruit, Fudo single-handely defeated Dragon Claw, allowing them to be Arrested. He is currently the only known man to keep up with Gouki's Speed.

Corral - A man who appeared once in the meeting of the Shichubukai. At the start of OPNN: New Dreams, for some unknown reason, Vincent (Talon) was searching for him.

Korten (Mentioned by name, but not seen. The only one not to attend the meeting.) Korten is a shrouded figure in both abilities and looks. He is known to kill three of the Ten Kings, and is suspect as head of an Orginization, currently investigated by Gouki and Jenny.

Ex-Shichibukai:

Boa Hancock - MIA - It can be assumed that if Boa survived, she was banished from the Shichibukai after helping Monkey D. Luffy, and likely went back to her island.

Bartholomew Kuma - MIA - Kuma could be deceased, if Ryumen actually has the paw paw fruit. But this has been unconfirmed and so far Ryumen hasn't shown any 'paw' tendencies.

Mihawk - MIA - It is possible that Mihawk was killed by the Admirals after they found Roranora Zoro.

Gecko Moria - MIA - If the current events of the manga are any indication, Gecko Moria is alive somewhere in the world.

Donquixote DoFlamingo - MIA - DoFlamingo is likely hunting down Gecko Moria, as he escaped his grasp.

Crocodile - MIA - Crocodile was banished from the Shichibukai for the crimes against King Nerfartavi, but after the escape of Impel Down he participated in the Marine Ford war. He was either hunted down by the new admirals, or is living a life of seclusion.

Jimbei - MIA - If alive and after escaping Impel Down, Jimbei may have went down to Fishman Island.

Blackbeard - MIA - If Blackbeard, and his new crew, are alive, they are likely forming a plan to take down the World Government.

The Marines
The Marines were led by Fleet-Admiral Sengoku, until his assassination at the Straw Hat's execution. It is known that one of three admirals will take his position, so that would either be Rikumaru, Tenkumaru, or Umimaru. And as a result of a Admiral being promoted, a Vice-Admiral will be promoted.

Fleet Admiral
Rikumaru

Sengoku - Deceased - Killed by Sogeking (But has an mysterious wound)

Admiral
Minka

Umimaru - Killed by Shorai Grillando

Tenkumaru

Aokoji - Dead - As Diego Faulkner has the same fruit, it means Aokiji was killed, likely in the line of duty.

Akaina - MIA

Kizaru - Dead - As Toshiro Fudo has the same fruit, it means Kizaru was killed, likely in the line of duty.

Vice-Admiral
Smoker

Coby

Ronse - Deceased - Killed by Shorai Grillando

Lacroix - Deceased - Killed by Shorai Grillando

Commodore
Jennifer Zira

Captain
Kitsune

Valerie Steel

Kobra - Deceased - Killed by Shorai Grillando

James McInder - PA to Rikumaru

Unknown Captain - Killed by Yuuma

Fleet Commander
James T. Washer - Deceased - Killed by Valerie Steel

Marines
Soul - Deceased - Killed by Yuuma

Heart - Deceased - Killed by Mist

Unknown Ranks
The Giant Squad - All killed by Shorai Grillando

The Zenkai
The Zenkai are a mysterious orginization which replaced the Yonkou as one of the Three Powers. They specialise in researching devil fruits, and have even created serums. The only known members so far ar Cole and King, although they were not the main leaders.

Known Members
Cole

King